happy maths - numbers - mala kumar (1.4 mb pdf) - Arvind Gupta

14
No, silly,
I meant with only your fingers.
See, here’s how you multiply by 9 with
your ten fingers.
Try this
Zzero, do you know
how to multiply with your
fingers?
Stretch out your fingers.
9x3. Bend finger 3.
Answer=27
Finger Fun
To calculate 9 X 1, bend finger
number 1. Count the number
of fingers on either side of the
bent finger. 0 and 9. 9 is your
answer.
Of course. I pick up a pencil and
paper with my fingers, write the
numbers and then write the
answers.
4x9 Bend finger 4.
Answer=36
9x2. Bend finger 2.
One finger on the
left, 8 on the right of
bent finger. Answer
is 18
5x9 Bend finger 5.
Answer=45